Steam Power Plants (incl. Biomass Plants)

Technical Papers

2010

Experiences with gas and steam turbine power plant projects on the Russian market

presented at Russia Power, Moscow, March 2010Increasing electricity demands, and strong growth in the power industry, together with aging plant capacity, has created a need for new investments in Russia. The continuing challenge is to finance and execute timely huge investment projects to provide sustainable and reliable energy for its residential and industrial areas, ensuring the availability of equipment, engineering and management resources. This paper covers some of those investments and explains technical features with case studies of these projects, combined heat and power or combined cycle, as supplied by Siemens.

presented at Power-Gen Cologne 2009 The higher efficiency of the power plants is the important factor for reducing fuel costs and emissions. Siemens is currently constructing an advanced steam power plant in Luenen, Germany, with ultra-supercritical conditions. The target is to demonstrate a net plant efficiency over 45% (LHV basis, hard coal). The plant is scheduled to start operation in the fall of 2012.

Optimal Power Plant Integration of Post-Combustion CO2 Capture

presented at Power-Gen Cologne 2009Steam power plants are the major sources of base-load power generation in many countries. However, the CO2 emissions from these power plants cause global warming. At this important juncture, it is highly essential to reduce the emissions from conventional power plants, for which Siemens is already demonstrating the best solutions and also post-combustion CO2 capture.Siemens has already invented the patent capture techniques and solutions. Now it is also important to integrate the capture plant into conventional power plants with optimal energy usage. This paper explains Siemens solutions for the CO2 capture process and integration of the capture unit into a conventional steam power generation unit.

presented at Power-Gen Asia 2008State of the art ultra supercritical (USC) steam parameters provide highest efficiencies (i.e. lowest fuel costs and emissions like CO2) for coal fired steam power plants. At the same time these plants also face the requirements of deregulated electricity markets with an increasing portion of renewable energy. Thus units have to be capable of flexible load operation and frequency support. The overload admission has proven to be very effective for flexible turbine operation at an excellent heat rate. Both main turbine components and controls have been optimized to minimize thermal stresses, leading to an improved start-up performance.

Experience in India /Asia with small-scale industrial steam turbines in decentralised power plants

presented at Power Gen India and Central Asia, New Delhi, March 2008With the increasing prices of fuels and electricity and increasing public environmental awareness, it is becoming more attractive for investors to build small power generation units, which use waste from their production as fuel for a small power plant or to install a small steam turbine to utilize an excess steam for electricity production. The main focus of this paper is to examine some of the recent cogeneration projects in India and Asia where high-efficiency, single-stage, back-pressure or extracting-condensing turbines with outputs of up to 2000 kW have been installed to power different industries and improve the economy of the plant operation. Experience with decentralised power plants in Europe are also referenced.

Turbine and Condenser Modernization in the Farge Power Plant as an example of One Source of Competence

presented at Power Gen Europe 2006, Cologne, GermanyFarge Power Plant is located in the north of Germany in Bremen. It is owned by the German power supplier E.ON.Farge PP is a 350 MW, coal fired power station with a Siemens PG Steam Turbine consists of HP, IP and 2 LPs and a Siemens PG hydrogen cooled generator. The station was commissioned in 1967. After more then 30 years of operation it has accumulated approximately 200.000 working hours with nearly 4400 starts and stops.

SRS: The Standardized Repowering Solution for 300 MW Steam Power Plants in Russia

2006Deregulation and competition are further fueling the demand for new power generationequipment worldwide. Due to the availability and cleanliness of gas, and the ease of consent, gas turbine applications have increased over the last few years. This development is driven by the addition of capacity, but also by major replacement programs. In this market in particular, Siemens has been realizing that repowering of existing units is taken into consideration due to its reduced land, infrastructure, existing permits, capital cost and time requirement compared to greenfield projects.

Biomass looking for efficient utilization – The Reheat Concept

presented at Power Gen Europe 2006, Cologne, GermanyThrough the Kyoto protocol and its country-specific targets, power producers are strongly driven towards CO2-reducing solutions such as biomass energy production. Germany encourages this through new energy legislation, EEG (Renewable Energy Law), which gives higher subsidies for high-efficiency, CO2-reducing power generation. This has led to increased investment in biomass plants. The impact of the high efficiency requirements has enabled new technology to enter this market segment. This paper examines the suitability of industrial steam turbines for this growing market segment, with particular reference to SST-PAC 400 reheat turbosets and gives examples in Germany and Austria.

Principles of Flue Gas Water Recovery System

presented at POWER-GEN International 2005This paper discusses a commercially viable and novel technology that enables the recovery of the water vapor contained in power plant flue gas streams.Currently, fossil fuel-based power plants consume vast quantities of water for heat rejection, fuel preparation, power augmentation, emissions control, and cycle makeup purposes. At the same time, global water resources are becoming more difficult to procure as water consumption outstrips the pace of renewal. At present, the strategy used to reduce power plant water consumption in areas where water restrictions are stringent is to employ an air-cooled condenser as opposed to once-through cooling or a cooling tower.

Balancing economics and environmental friendliness - the Challenge for supercritical coal-fired power plants with highest steam parameters in the future

presented at Power-Gen Europe 2005Siemens has developed for the European power market a 600 MW single unit concept together with several partners. This plant concept fulfils the requirement to balance reliable power supply, sustainable use of existing resources and economic operation. The Reference Power Plant NRW (RPP NRW) is designed for an inland location and achieves a net efficiency of 46 %.This paper describes results of the turbine development. Some specials of the water steam cycle optimization of the concept study Reference Power Plant North Rhine-Westphalia will be given. Furthermore a view in the future of steam power plants will be given.

Performance Increase through World Class Technology and Implementation

presented at Power-Gen Europe 2005In the present power production market, maintaining an economically competitive power plant requires the latest technological mechanical improvements, as well as efficiency optimization and increase economics of operation and maintenance. Through present day technological developments, the ability to improve economics through increased performance, life extension, and reduction of maintenance costs is, in many cases, just what is required to remain competitive.This paper describes in detail the technology and how this is applied and executed in the case of the coal-fired Mehrum Power Plant, Germany.

Design Specifics of High Efficiency Biomass Power Plants for fresh wood from forestry exemplified at the 23 MWe Biomass Power Plant Simmering / Vienna – Austria

presented at Power Gen Europe 2005, Milan, ItalyThe utilisation of biomass within renewable energy production is the option with the biggest rate of growth in the coming years. However, as the resources of biomass available for producing energy are limited, maximum utilisation of the fuel is very important. Technologies chosen will be exemplified in this paper by two projects executed by Siemens Power Generation. One is a project in South Italy (Biomass Power Plant Monopoli) that has been in commercial operation since the beginning of 2004. The other one is a project in Vienna (Biomass Power Plant Simmering) that has been under project execution since the end of 2004.

presented at Power-Gen Europe 2004After three years of project development the 1320 MW (gross) Coal Fired Power Plant Iskenderun achieved financial close on 26 June 2000 as the first of five IPP projects in Turkey.

presented at Power-Gen Asia 2003Numerous biomasses fuelled power plants, as well as process steam and heat-producing plants are already in operation worldwide. However, the real environmental benefit of biomass utilization will come when we can use large amounts of biomass-based fuel to generate electricity, thereby considerably reducing consumption of fossil fuels.

Biomasse Combustion With State Of The Art Bubbling Bed Steam Generators

presented at Power-Gen Europe 2003Biomass fuel exists in various forms, traditionally as wood, bark, harvesting residues and organic waste resulting from agricultural industry. In the new type of biomass the carbon content for incineration is contained in the so-called "renewable energy sources" - residual material and residues like industrial waste, tailings, sewage sludge and RDF. Our main combustion technology for these biomass fuels is the bubbling fluidised bed combustion named "EcoFluid" with our special design features.